Asbestos product



J. A. HEANY.

Asst-:sms PRODUCT. FI LED ocT. 7. 1919.

LEH/VLEA//f/m/y ma HM Patented Dec.. 19, 1922.

, (1,439,166 PATENT OFFICE.

STATES JOHN ALLEN HEANY, NEW HAVEN, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO ROCKBESTOS PRODUCTS CORPORATION, A CORPORATION F DELAWARE.

AsBEs'ros rnonuc'r.

Application led October 7,191.9. Serial No. 329,112.

To all whom t may oofrwem:

Be it known that I, JOHN ALLEN HEANY, a citizen of the United States, and a resident of New Haven, inthe county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Asbestos Products, of which the following is a specification.

rial,

This invention relates to a new and improved product `made from tenuous me tallic bodies, associated with fibrous matemore particularly to an asbestos strand reinforcedy with metal, and to the process by which the same is made.

Some of the objects of the invention are the provision of an article ofithe kind to which reference has been made, the fibrous material, even although it may be short-fibered and of smooth character, is securely associated withuthe tenuous metallic body or wire without the use of a binder or other adhesive means, and to 'produce such an article by a new process which is simple and inexpensive, as compared with t-he processes now in commercial use. @ther objects and features will become apparent as the description proceeds.

v The product made in accordance with my invention may be put toa variety of uses; forexample, when wires are associated with a fibrous material which is entirely or mainly asbestos` the resulting product makes a superior metal-cored yarn or strand-from which articles and fabrics, such as brake line ings, gaskets, packings, theater curtains, fireproof masks and gloves, and the like, may be made. The wire serves t0 reinforce the fibrous material and thus gives strength to'the product, while the fibrous material supplies some strength and protects and insulates the wire from heating e'ects ten ing to weaken it. When the asbestos prod- .,.uct is woven or otherwise formed into artiwith from 20% to 50% cotton to a spinningl or twisting operation or both of them, and

then twisting the resulting strand together in which `twisted together.

strongly with wires, or winding it onto wires. It is necessary to incorporate the large proport-lon'of cotton Ain asbestos fiber to make it possible to spln or twist the resulting sliver.

-The asbestos product made in accordance wlth my lnvention need not have any cotton mixed with it and the asbestos is firmly assoclated with t-he wire in a process involving but two steps, and without first spinning-and twisting the asbestos into a strand. I achieve the objects of my invention by rubbmg, rolling or packing a sliver of carded fibrous materialdirectly on the wire and then twisting the wire with its coating of fibrous material until the two are firmly associated together. lfn the first-mentioned step the sliver is preferably rubbed, rolled or packed hard on the wire so that it is matted or compacted about the wire.

The resulting product is a wire with a coating of fibrous material and the two are so associated that the coating is smoothly, evenly and securely fastened and held to the wire.

Asv a modification, the fibrous material is rubbed onto each ofa plurality of wires, after which the fiber-covered wires are As a further modification, a single sliver of fibrous material is rubbed onto a plurality of associated wires and the coated wires are then twisted. lDuring these twisting operations the fibrous material becomes securely associated with and fastenedto the wires.

The asbestos product in any of its modifications madein accordance with the invention disclosed herein is .of practicable utility for the. purposes for which it is intended, and the fibrous coating is firmly and associated with and secured to the wire because of the twist it receives in the process. l Y

A suitable form of apparatus for carrying out the inventlon is illustrated in the accompanying drawing, in which the said apparatus is represented more or less diagrammatically'in side elevation.

The reference character l designates the dofier roll of a carding machine, which doffer roll is preferably of the ring doffer type; An oscillating comb 2 or an equivalent device is arranged to remove, in the form of slivers. asbestos or othei` fibrous material from the doffer roll ofthe carding sliver of fibrous Athe latter is compacted, matted, 01 rolled A V,..prl'essure-between the rolls so that the machine. AA conveyer belt 3 is arranged to receive the sliverof fibrous vmaterial from the comb, and adjacent to it is located the condenser, which, in this instance, com rises two sets 4 and 5. Each of the con enser sets 4 and 5 comprises a pair of rub motion'belts, upper andlower, and each belt is arranged to vreciprocate laterally while traveling in a direction to carry the sliver awa from the conveyer. Each belt travels at t e same rate of speed and in a direction so that the adjacent surfaces of. the belts of a set advance in the same directi'on but reci rocate `laterally in opposite directions. reel 7 is arranged to hold the supply of wire to be fed into the machine. A pair of rolls 6 are located near the end of the last set of rub-motion belts and below the rolls is the twisting and winding device 8. The. twister 8 is of any suitable construction, such, for example, as that ofthe wellknown ring twister, and is arranged to carry the spool 9 upon which the finished product'is wound.

In operation, the sliver of fibrous material is removed from the do'er roll 1 by the comb 2. The brous material may be substantially pure asbestos, but ifdesired, cotton may be used with the asbestos, in which case the cotton and asbestos are mixed before carding and .the coating of the 'resulting product has, of course, the same percentage of cotton in it as the asbestos which is `necessary, a tension devicel is arranged to hold the 'wire in proper tension. v As the wire is drawn'over the conveyer 3 and condenser inst the tension of -the reel v7 and tensionazvice l10, the comb 2 deposits a material on the wire and down Von and around the wire b `denser 4, 5. The condens or ro .f n. preferably takes place' with consi material is matted as tightly as? ible together and around the wire. The coated wire is led through the rolls t5 to the twister 8, which I have s of the rolls 6 are'driven at a ripheral speed equal to that oir the condser and conveyer belts to draw the ber-covered wire through the apparatus. Between the point where the ber-covered wire emer from between the rolls 6 and the spool 9 e wire and its fibrous coating are twisted by the twister 8 so that the finished product which is wound'on the spool 9 comprises a wire having a coating of fibrous material iirmly fastened, held, nd secured upon it.

run through the carding machine. The wire is strung over the conveyer 3 and the wire with asbestos,

fibrous own as a ring twister hav` .ing the spool 9 'mounted on it upon which' v the nished product is-Wonnd. One or both' asbestos yarn which wire and ber is twisted and wound on the v spool 9 provided for it. The thickness of the coating of brous material depends upon the rate at which the sliver is removed from the do'er roll relative to the speed of travel of the conveyer and condenser. A lurality of wires can be used with a sing e sliver, and if desired two or more coated wires can be twisted together by a single twister and wound as a single strand on a spool 9. A reel can be substituted for the rolls 6, in which case the coated wire is wound thereon. The reel of coated wire is then twisted on a twister of any approved ty e. I have formed such reels of coated wlre with a single, or two or more parallel strands of coated wire on them and have twisted the plurality of strands together from one or more reels, the resulting product var ing in strength and .size in accordance with the number of strands used.

I claim: 1. That method of forming a reinforced asbestos yarn which consists in passing a lament and a sliver of asbestos bers together between laterally reciprocating and' longitudinally advancing surfaces to thereby coat the lament with asbestos, 'and then in twisting theasbestos-coated lament. f

2.'. That method of forming a reinforced as os yarn which consists in passing a wire and a sliver of asbestos bers togetherbetween laterally reciprocating and longitudinally 'advancing surfaces to thereby coat andl then in twisting the asbestos-coated wire.

- 3. 'Ihat method o f forming a reinforced Lrorznthe rollers;

4. That method of forming a reinforced asbestos yarn which consists in passing a wire and a sliver of asbestos fibers together between laterally reciprocating and longitudinally advancing surfaces to thereby lcoat the wlre with asbestos, then in passing the asbestos-coated wire between gripping roll- 1wers having the 'same speed of travel as that of the advancing sur aces, and in twisting the coated wire as it emerges from the rollers.

5. That method of forming a reinforced izo consists 1n carrying -a 130 filament along a moving support and `between laterally reciprocating and longitudinally advancing rub motion belts, indepositing a sliver of asbestos on the moving filament whereby the sliver is carried with the filament between the surfaces to thereby coat the filament with asbestos, then in passing the asbestos-coated filament between gripping rollershaving a speed of travel equal to the speed of advancing travel of the rub motion belts, and in twisting the asbestoscovered filament directly as it emerges from the. rollers.

6. That method of forming a reinforced asbestos y'arn which consists in carrying a wire along a moving support and between laterally reciprocating and longitudinally advancing rub motion belts, in depositing, a

sliver of asbestos on the moving wire whereby the sliver is lcarried withthe wire between the surfaces to thereby coat Lthe wire with asbestos, then in passing the asbestos-coatedv wire between gripping rollers having a speed of travel equal to the speed of advancing travel of the rub motion belts, and in twisting the asbestos-covered wire directly as .it emerges from the rollers.

7. That improvement in the art of making reinforced asbestos yarn whichconsists in continuously working the asbestosinto the form of a roving, associating a wire reinforcement with said roving, and immediately twisting said roving and wire reinforcement together as fast as the roving is formed and thereby producing a reinforced asbestos 8. That improvement in the art of making asbestos yarn which consists in carding the asbestos-and thereby producing simultane-` ously a plurality of continuous strands of roving, associating a wire reinforcement with a plurality of said strands of roving, and immediately twistingsaid reinforcement and roving together at la point adjacent to the oint of delivery ofthe roving and at substantially the rate at which the roving is formed whereby the-roving passes contlnuously from its point of completion to the point at which it is twisted. Y Y

9. That improvement in theart of making reinforced asbestos' yarn which consists in working the asbestos into the form of a continuous roving, twisting the roving so produced while the roving is continuously transferred directly from the point at which it is formed to the point at which it is twisted, and associating a reinforcement with said roving prior to the twisting operation whereby said twisting operation unites said reinforcement with the asbestosand produces a reinforced asbestos am.

J OH ALLEN HEANY. 

